Kally Sleep Adjustable Pillow

Kally Sleep Pillow Review UK (2024)

Last updated: 31.10.2023 Reading time: 17 Min.

Have you ever felt like your pillow is just a tad too high?

Or that it's just too flat, and you wish you could stack another one on top?

Kally may have just the solution for you - an adjustable pillow that you can customise to your liking!

This sounds good in theory, but how does it actually work? 🤔

And is the Kally adjustable pillow all it promises to be?

We find out in this Kally Sleep pillow review. 👇

Top features of the Kally pillow

Fully Customisable
Free delivery & returns
Free Delivery
14-day trial period
14-Day Trial Period


  • Four sleep pads that can be combined to create a high loft, low loft, soft, or firm pillow.

  • Suitable for all sleeping positions.

  • Cooling cover.

  • Fully machine-washable at 40℃.

  • Hypoallergenic and great for people prone to allergies.

  • Free delivery within the UK.

  • Ships to Europe at a nominal fee.

  • 14-day trial period.

  • Cheaper than many other pillows available.


  • Materials aren't the highest quality.

  • The trial period is not entirely risk-free as the customer has to cover the costs of the return.

What makes the Kally pillow special?

🔧 Four interchangeable sleep pads to customise for your sleeping position.

🌬️ Breathable design that pushes away heat.

🧼 Fully machine-washable.

Kally Sleep adjustable pillow composition

The Kally Sleep Adjustable Pillow is more than just one pillow.

In fact, it's closer to four pillows in one!

That's because each Kally Pillow contains four easy-to-remove inner sleep pads, which look just like miniature pillows. 🤩

kally adjustable pillow layers
The Kally Sleep pillow comes with four pillow pads.

The Kally Pillow is made of two primary materials:

  • 100% polycotton pillow cover
  • Hollowfibre filling in each pillow pad

We'll get to the polycotton cover a little further down. 👇

But, first, let's consider the hollowfibre filling.


Kally adjustable pillow materials
The Kally pillow is made from hollowfibre and cotton.

Why hollowfibre?

Hollowfibre is a synthetic material made from fine strands of polyester [1].

It's one of the most popular bedding materials, mainly because it's affordable, machine-washable, and hypoallergenic.

This makes it an excellent choice for people prone to allergies. 🤧

Hollowfibre pillows are plump and springy and usually offer medium-firm to firm support.

But, of course, this will differ for the Kally Sleep Adjustable pillow as you can customise it to suit your needs!

And how exactly do you do that?

Well, we'll get to that in the next section. 🥳

Kally pillow composition breakdown

What does sleeping on the Kally pillow feel like?

The Kally pillow is completely adjustable - so it feels different depending on how many sleep pads you keep.


kally adjustable pillow
The Kally adjustable pillow is actually a four-in-one.

The pillow will feel one way if you use it with just one sleep pad and completely different if you use it with all four sleep pads. 😳

Luckily, we like being the Sleep Hero guinea pigs, so we tried the Kally Sleep adjustable pillow over numerous nights to test all the different options. 👇

Overall comfort & feel of the Kally Sleep pillow

It's important to remember that the Kally is a hollowfibre pillow.

This means it'll have that typical hollowfibre sponginess that will feel closer to more traditional pillows.

Many customisable pillows, like the Emma pillow and the Nectar pillow, are made from memory foam.

Memory foam versus traditional pillows
Memory foam is more adaptive than hollowfibre.

Memory foam offers unique contouring that'll cradle your head.

It moulds to the exact shape of your body for superior support and pressure relief. 🤗

Is memory foam better?

  • Many people like memory foam pillows because they feel sturdier and more supportive.
  • But even though memory foam is a more premium material, just as many people find memory foam pillows too rigid.

The DreamCloud pillow is about as deep as the Kally pillow but much firmer.

The memory foam in the DreamCloud pillow provides a solid, cushion-like feel for those who prefer a firmer pillow.


However, The DreamCloud pillow is not adjustable like the Kally pillow.

For those who prefer a soft and fluffy feel, then the Kally adjustable pillow may just be the right fit for you. 😴

happy woman sleeping
The Kally pillow is a great cuddle companion.

Is the Kally pillow suitable for my sleeping position?

The great thing about the Kally pillow is that you can adjust it to suit your sleeping position.

pillow alignment graphic
You can change the Kally pillow height to suit your sleeping style.

The number of sleep pads you choose to keep will significantly affect how the pillow feels. 👌

But, which combination works best for you will depend largely on your sleep position.

Is the Kally pillow good for side sleepers?

Over 70% of adults sleep on their side.

It'll make sense, then, that so many pillows cater to side sleepers.

Side sleepers generally need higher loft pillows that offer a good combination of firmness and sinkage. 🤿

person sleeping on side graphic
Side sleepers need a high and firm pillow.

When you get the Kally Sleep pillow, it'll be thick and lofty. 😍

That's because all four sleep pads will be stuffed into the cover.

Since the pillow comes this way, we decided to initially test it with all four pads.

Keeping all four sleep pads does two things:

  • It creates a very firm pillow.
  • It creates a very high loft pillow.

This can be great for many side sleepers, but it won't be suitable for everyone.

We found all four sleep pads a little too high for our sleep. 👎

pressing kally pillow

side sleeping kally pillow

With four layers, the pillow created a bend in the back and we woke with neck pain. 😨

Four sleep pads may be the best choice for side sleepers of a larger build who need a very high loft pillow.

However, if you have narrow shoulders, you’ll probably feel more comfortable with a slightly lower pillow.

We tried the side sleeping position with three layers

Keeping three of the four sleep pads felt like the optimal way to use the Kally adjustable pillow. 🙌

The height and firmness of the three layers provided better spinal alignment and created less of a bend in the neck.


kally sleep pillow side position 3 layers
The side sleeping position is most comfortable with three layers.

The pillow had the same firmness, but a lower height for smaller shoulders.

Overall, it felt supportive and comfortable throughout the night with three layers. 🥰

Is the Kally pillow good for back sleepers?

Whilst we found three layers most comfortable in the side sleeping position, this was slightly too high for back sleeping. 🤔

Sleeping on your back is the healthiest position as it puts the least amount of pressure on your spine.

Back sleepers need:

  • A medium loft pillow that aligns the spine and neck.
  • A medium-feel pillow that gently cushions the head and shoulders.

If the pillow is too high, your neck will be pushed forward, but if it is too low, your neck will bend back.

back sleeping spinal alignment
Back sleepers need a medium pillow for the best alignment.

Two sleep pads were the optimal height and firmness for back sleeping.

The slightly lower loft supported the head yet kept the spine and neck straight. 📏


pressing kally pillow 2 layers

back sleeping kally pillow on two layers

The pillow was soft enough to cushion the head and shoulders without completely sinking into the pillow.

However, if you are of a heavier build and sleep on your back, three sleep pads may be the better choice.

The great thing about the Kally pillow is that it’s customisable to each individual.

Is the Kally pillow good for stomach sleepers?

Sleeping on your stomach isn't great for your spine - or neck.

If the pillow is too high, your spine and neck will bend upwards, creating extra tension.

stomach sleeper graphic
Stomach sleepers should choose a pillow that keeps the neck straight and aligned.

One sleep pad in the Kally pillow created the softest and lowest loft pillow.

A single sleep pad felt too low for side and back sleepers.

However, this provided the perfect loft and firmness for stomach sleepers.


pressing kally pillow one layer

stomach sleeping on kally pillow

One sleep pad provided just enough cushioning to support the head without being too deep to create a bend in the spine and neck.

What if you need more adjustability?

Customisable pillows with different layers - like the Kally Sleep pillow, Nectar pillow, and Emma pillow - can only be adjusted to a certain degree. 😐

If you need a pillow that offers greater customisation, it may be worth looking into shredded foam pillows.

The Simba Hybrid pillow, for example, features shredded memory foam. 🧽

You can take out as much or as little filling as you want, so you can get the pillow perfectly matched to your requirements.

Kally Sleep pillow cover

The Kally pillow cover is made of 100% cotton. 🌱

We were surprised by the quality of the cover, as it didn’t have the soft feel of cotton we expected.

kally sleep cover
The Kally pillow cover feels rougher than typical cotton.

On initial inspection, we weren't overly impressed with the feel and quality of the cover.

However, the cover is also fairly thick, which serves a more practical purpose.

Since you can swap out the inner pads, you need a cover that's thick enough to feel comfortable no matter how many layers are in the actual pillow.

The thickness should also help the cover last through washes, an important trait when it comes to overall longevity. ⏲️


kally pillow cover close up
The Kally pillow cover is thick and durable.

Breathability & airflow

Conveniently, the side of the cover also features an air vent system, which allows for a steady flow of air through the pillow. 💨

kally sleep pillow ventilation system
The Kally pillow cover has an advanced ventilation system.

This is necessary to push away heat that has built up inside the pillow.

Additionally, cotton is well known for its breathable and moisture-wicking properties.

Synthetic fibres like hollowfibre are often not as temperature-regulating as natural materials, so they require a little extra technology to keep them breathable. ❄️


kally pillow cover
We didn't overheat on the Kally Sleep pillow.

During our testing, we felt comfortably cool throughout the night and the Kally pillow never felt too warm.

Can you wash the Kally pillow?

The great thing about (most) synthetic fibres is that they're washable. 🛀

The Kally pillow is fully machine-washable at 40℃.

This high temperature can effectively kill dust mites and bacteria, making the Kally pillow a great anti-allergen choice for people prone to sniffles. 🤧


kally pillow washing instructions
The Kally pillow is fully washable.

Once washed, leave the pillow to dry naturally on a flat surface.

This will ensure that it keeps its shape.

Other adjustable pillows, like the Simba Hybrid pillow, tend to rely on memory foam and they cannot be washed.

If you prefer, you could remove the cover and wash only this part of the pillow to remove bacteria and moisture.

unzipping kally pillow

kally pillow unzipped

The cover can be removed easily by undoing the zip on the side of the pillow.

This is also how you can add and remove layers to customise your pillow.

Kally Sleep pillow sizes

The Kally pillow comes in the standard 70 x 40 cm (27.5 x 15.7 inches) dimension.

We also measured the Kally pillow for each adjustable height to give you an idea of the available depths.

Our size guide:

Depth of pillow in cm and inches
Four layers 22 cm (8.6 inches) approx.
Three layers 19 cm (7.4 inches) approx.
Two layers 16 cm (6.2 inches) approx
One layer 11cm (4.3 inches) approx

The Kally Sleep pillow is 22 cm with all four layers.

This is exceptionally deep for a standard pillow. ⛰

If you usually like sleeping on two or more pillows, the Kally pillow will be perfect for you.

kally pillow four layers
The Kally pillow is extra deep with all four layers.

The Kally pillow, with all pads, weighs 900 g (1.9 lbs). 🏋️‍♀️

We'd recommend buying some of the Kally pillowcases together with your pillow.

They're made of 200-thread count cotton and are very affordable.

Try the Kally pillowcase:

Kally Sleep pillow prices

The Kally adjustable pillow is one of the most affordable customisable pillows on the market in the UK.

It comes in at a minimum of 45% cheaper than some of the other options out there! 🥳

But, we have to add that this has a lot to do with the quality of materials.


Price-performance ratio
You should find a good balance between quality and price.

Even though the Kally pillow doesn't rely on cheap and inferior materials, it is still made of hollowfibre.

This is generally a cheaper option.

But overall, our conclusion was that this is a good value for money product.

However, there are similarly priced products that are even better value.

The Panda Memory Foam pillow is just slightly more expensive, yet made with high-quality organic bamboo and sumptuous memory foam.

Kally Sleep pillow discount codes

The Kally Sleep pillow is already very well priced.

But this doesn't mean that Kally Sleep doesn't ever run any deals and promotions.

We always keep an eye out for good deals. 👀

We even collect all the best ones on our discounts page.


If there are any Kally pillow discount codes running, we'll be sure to announce them on this page.

Make sure you apply your voucher code upon checkout to receive your discount.

What other pillows does Kally Sleep sell?

Kally Sleep offers a wide range of very affordable pillows, many of which have been designed to deal with back pain, indigestion and sleep problems, and sports recovery. ⛹️‍♀️

These include:

  • Kally Body Support Pillow: This best-selling orthopaedic body pillow is an excellent option for those looking for full-body support.
  • Kally Anti-Snore Pillow: Featuring an s-shaped foam core, this pillow has been designed to promote a quieter, deeper sleep.
  • Kally U-Shaped Pregnancy Pillow: This pillow is great for expecting mums to provide comfort, alleviate lower back pain, and support you and your growing belly.
  • Kally Ultimate Side Sleeper Pillow: This no-fuss pillow is perfectly designed for side sleepers.
  • Kally Acid Reflux Wedge Pillow: This wedge-shaped pillow offers head or torso support and helps with heartburn and acid reflux.

We've included a snapshot of our favourites below. 👇

Kally Sleep delivery conditions

Kally Sleep offers free delivery for all orders over £39 within the United Kingdom and Northern Ireland. 🇬🇧

Standard delivery takes place within 2- 3 days.

Next-day delivery options are also available at a small fee.

Kally pillow delivery
The Kally pillow is delivered wrapped in plastic.

Kally Sleep also delivers to Europe at a nominal fee; delivery takes place within 3 -5 working days. 🇪🇺

The Kally Sleep adjustable pillow is delivered in a plastic bag with a fabric back and handle.

The layers inside the pillow cover are also wrapped in plastic.

kally sleep pillow layers in plastic

kally sleep pillow warning label

Ensure you remove all packaging before using your Kally Sleep pillow.

Kally Sleep pillow trial period & returns

The Kally adjustable pillow comes with a convenient 14-day trial period.

We love trial periods.

They give you the chance to test the pillow at home in real-life conditions. 🏡

If you're not 100% satisfied, you can return the pillow for a full refund.

You'll receive your refund within 5 - 10 working days.

Pillow trial return period
The Kally Sleep pillow comes with a 14-day sleep trial.

Fourteen days is plenty to decide whether or not you like a pillow.

Many comparable brands - like Nectar and Simba - don't offer any trials on their pillows.

But, some other comparable brands offer even longer trial periods:

It's also worth remembering that the Kally trial is not an entirely risk-free operation. ☹️

The customer will have to cover the costs of the postal returns.

Flash Sale items don't come with the return option.

What happens with returned pillows?

For hygiene reasons, Kally Sleep cannot resell returned pillows.

Instead, they've partnered with the Marylebone Project [2], a charity organisation that provides accommodation and support to women who are homeless or in need of short-term housing. 🙍‍♀️

Should you buy the Kally Sleep pillow?

The Kally adjustable pillow is a great invention, and we enjoyed sleeping on it. 💤

You'll be able to customise it to suit your needs exactly.

We'd recommend the Kally adjustable pillow to:

  • Sleepers looking for an affordable pillow.
  • Back, stomach, and side sleepers who want a customisable solution.
  • Sleepers looking for a simple pillow that does its job without fluff or fuss.


Even though we liked the Kally pillow, it's worth remembering that this is still an entry-level adjustable pillow.

The materials are good, but overall the pillow can't compare to more premium memory foam options like the Nectar pillow or the 100% customisable Simba pillow.


  • Material

    Quality materials

  • Comfort

    Really comfortable 

  • Off-gassing

    We didn't experience any off-gassing

  • Motion transfer & support

    Average support, depending on the fill level

  • Delivery & returns

    Free delivery but no free returns

  • Value for money

    Good value for money

Motion transfer & support
Delivery & returns
Value for money

Contact Kally Sleep UK

Customer service: To contact Kally Sleep UK directly for complaints, support, or queries, please e-mail them at hello@kallysleep.co.uk, call them on 020 7499 6209, or complete their online contact form. Customer service is available Monday - Friday from 09:00 - 17:00.

Registered office: 18 Cavendish Square, London W1G 0PJ, UK

Frequently asked questions

  • Can I buy the Kally pillow in packs?

    The Kally pillow is available in packs.

    These include:

    • Single: One pillow
    • Twin Pack: Two pillow
    • Four Pack: Four pillows

    Pack prices include a significant discount so you can get more value for money.

  • Does the Kally pillow come with a guarantee?

    Yes, in addition to the 14-day sleep trial, all Kally pillows also come with a 2-year manufacturing warranty.

  • Can you tell me more about Kally Sleep?

    Kally Sleep can best be described as a pillow expert.

    The company launched its first product - the Kally Body Pillow - in 2018.

    Since then, that product alone has helped 40,000 people with sleep issues.

    Today, Kally Sleep offers a range of pillows to suit a wide variety of needs and combat dozens of issues, including pregnancy pains, neck pains, and lumbar support.

    The products are designed together with experts, doctors, physiotherapists, and chiropractors to make sure they'll actually help Kally customers sleep better.

    Most notably, their ultimate sleep system for the full-body pillow is designed by Harley Street practitioners to ensure the most comfortable and supportive sleep possible.

    All of Kally Sleep's products are kept affordable - while not compromising on quality.

  • Can I buy Kally pillows on Amazon in the UK?

    Yes, you can buy Kally pillows on Amazon in the UK.

    But we'd always recommend purchasing directly from the brand's website.

    That way, you're guaranteed the best prices and the original quality.

  • Are Kally pillows good quality?

    Kally Sleep proudly displays dozens of five-star reviews for all of the pillows on their website. 

    Most Kally pillows also have a 4.5-star rating on Amazon, and the company as a whole has a 3.7-star rating on Trustpilot.

    Sometimes star ratings are worth gold, but other times they can be a little misleading. 

    We think that Kally pillows are of good quality and offer great value for money.

    But it's important to remember that these are still budget pillows, and they won't necessarily compare as favourably to some of the more premium ranges.

  • References



Editor & Certified Sleep Therapist

Nicky is an experienced writer and editor with numerous qualifications. As a certified sleep coach, her interests lie in understanding how sleep problems arise from hormonal and environmental issues, particularly as part of stress and anxiety management.

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